Security bar for sliding doors

ABSTRACT

An adjustable, elongated security bar including two telescopic sections and having a depending leg on one end with an outwardly extending projection thereon which fits beneath the corner of the frame of a sliding glass patio door and having on the other end an arrangement or projections one of which is carried by a depending leg approximately the same length as the leg on the other end for positioning in the door frame track in the threshold. Another projecting member on the same end as the second leg projects outwardly and fits into the vertical channel in the door frame above the bottom corner to prevent dislodgement and stop the door from sliding. The projection on the second leg rests against the face of the second door frame which may be either a sliding glass door frame or a fixed door frame and still another projection thereabove projects in front of the second frame and blocks the frame and therefore the entire second door from movement. Another and second, outwardly projecting member is an alternative construction for a different type of frame.

United States Patent [191 Littrell June 18, 1974 SECURITY BAR FORSLIDING DOORS [76] Inventor: James A. Littrell, 111 Little Valley Dr.,Cartersville, Ga. 30120 [22] Filed: Mar. 13, 1972 [21] Appl. No.:233,995

[52] US. Cl. 49/449, 292/262 [51] Int. Cl EOSd 13/04 [58] Field ofSearch 49/449, 450; 292/2 DF, 292/262, 335

[56] References Cited UNITED STATES PATENTS 3,135,543 6/1964 lngalls292/262 3,698,754 10/1972 Means 292/262 Primary Examiner-Kenneth DowneyAttorney, Agent, or Firm-Patrick F. Henry [57] ABSTRACT An adjustable,elongated security bar including two telescopic sections and having adepending leg on one end with an outwardly extending projection thereonwhich fits beneath the comer of the frame of a sliding glass patio doorand having on the other end an arrangement or projections one of whichis carried by a depending leg approximately the same length as the legon the other end for positioning in the door frame track in thethreshold. Another projecting member on the same end as the second legprojects outwardly and fits into the vertical channel in the door frameabove the bottom corner to prevent dislodgement and stop the door fromsliding. The projection on the second leg rests against the face of thesecond door frame which may be either a sliding glass door frame or afixed door frame and still another projection thereabove projects infront of the second frame and blocks the frame and therefore the entiresecond door from movement. Another and second, outwardly projectingmember is an alternative construction for a different type of frame.

6 Claims, 3 Drawing lFigures 1 SECURITY BAR FOR SLIDING DOORS BACKGROUNDOF THE INVENTION 1. Field of the Invention Security latching devices forclosures such as doors and windows. Fixed bar-type security locks fordoors.

2. Description of the Prior Art The most common and least expensivemethod of blocking a sliding glass door is to use a section ofbroomstick or pole dropped into the channel of the threshold with oneend abutting the door frame and the other end abutting the fixed framein the wall. There is a space between the sliding glass door frame andthe fixed or second sliding glass door frame which is sealed byinsulation of one sort or another such as a rubber strip but it ispossible to insert ascrewdriver or other implement through this spaceand to manipulate a broomstick or similar straight section in such a wayas to dislodge it from the door. This has been done quite often byburglars to enter a patio door in homes. There are other securitylatching devices for sliding glass doors including chains and implementsinserted between the fixed frame in the opening and the vertical part ofthe door frame. As mentioned previously the members inserted in thismanner can be dislodged 'by manipulation with a thin implement orscrewdriver. Chains can be forced loose by constant pressure on the doorand it is even possible to use a small screwjack implement to jack thedoor enough to rip the chain bracket from its anchor. A sliding glassdoor is a common way of entering a home and it is usually secluded atthe rear or side where a burglar can work quietly for a few minutes toget the door open. The present device is inserted and removed quicklyand easily but cannot be dislodged by manipulation either between thedoor frames or pressure against one or the other.

SUMMARY OF THE INVENTION An adjustable security bar which has one endinserted beneath the corner of the sliding glass door frame and theother end projecting in such a way as to be inside the fixed framechannel and in front of a second door frame.

An object of this invention is to provide a security bar which is easilyinstalled and removed and which therefore can be placed at night beforeretiring and removed the next day and which is so inserted behind themovable door frame as to prevent dislodgement by a potential housebreaker working outside the door and so arranged as to also block asecond sliding glass panel and to be located in a recessed part of thefixed wall frame.

Another object of this invention is found in the adaptability of theabove noted security bar so that it may fit anyone of many differentsizes and types of doors.

Another object of this invention is found in the simplicity ofconstruction lending itself to economical manufacture.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a top plan view of one formof the present security bar in place on a typical sliding glass patiodoor arrangement which slides from right to left.

FIG. 2 is a perspective view of the sliding glass door arrangement andsecurity bar shown in FIG. 1, and with .2 the parts of thefixed frameand door frames shown in dotted lines.

FIG. 3 is a perspective viewof the same bar of FIG. 1 on a door whichslides from left to right.

DESCRIPTION OF THE PREFERRED EMBODIMENT The security bar is designatedoverall and generally by reference numeral 10 and comprises an elongatedbar member designated generally by reference numeral 12 consisting oftwo elongated members 14, 16 telescopically connected to form thecomposite elongated bar 12. Section 16 is hollow and has insertedtherein the end of sectionl4 which hasa series of holes 18 in spacedrelation thereon and any one of which matches with a hole 20 in section16 into which is inserted a fastener 22 thereby providing selectiveadjustment of the two sections 14, 16 by repositioning fastener 22 inany one of many positions of aligned openings 18, 20.

The security bar 10 fits any one of many different sizes andarrangements of doors. In the dotted lines in FIGS. 1 and 2 there isillustrated partially a typical fixed aluminum frame 30 in a wallopening and having a threshold 32 supporting an inside track 34 and anoutside track 36 in which respectively is mounted a respective slidingglass door 38, 40 each having respective horizontal frame members 42 andvertical frame members 44 in which is mounted glass 46.

The fixed frame 30 in the wall opening includes vertical frame members50 in the form of aluminum channels or extrusions 52. Door 38 slidesfrom right to left inside the room to be made secure.

The security bar 12 section 16 has a short leg 60 extending therefromand leg 60 has a short projection or foot 62 which is slightly taperedto fit beneath the corner under the horizontal frame member 64 at thecorner 66 of the first removable or fixed door 38. The leg 60 lies inand extends parallel with the track 34 under the door 38.

The other end of the security bar 10 opposite from section 16 and on theend of section 14 includes a downwardly depending and projecting leg 70which is welded, brazed or otherwise attached to the section 14. Leg 70,which is about the same length as the leg 60 on the other end, includesa short projection 72 which engages the side of the door frame member 42of second door 40. A third projection 76 is a door blocking projectionand extends inwardly from the section 14 to abutt and lie against theface 78 of the vertical frame member 44 of the second sliding door 40.The end of section 14 has an outwardly extending fourth projection 80which fits into and transversely across the channel 52 securelypositioning the section 14 to prevent displacement and dislodgement andto prevent the section 14 from being dislodged sideways or rotated tobring the ends of the section 14 out of the channel 52. Anotherprojection 82 which is spaced from and parallel with a projection 80 andextends outwardly in the same manner is slightly longer and it is for adifferent type of door arrangement than that shown in FIGS. 1 and 2.

In the arrangement shown in FIG. 3 the inside door in the room slidesfrom left to right and the other door 92 on the right hand is outsideand may be a fixed panel or removable panel door. The same security bar10 is used with the fourth projection 80 against the frame of door 92and the projection 82 is across the face of the frame of door 92 just asprojection 76 was previously. Leg 70 is vertical and in the sameposition except that projection 72 faces outwardly rather than againstthe door frame.

While I have shown and described a particular embodiment of thisinvention in connection with a certain arrangement of sliding glass doorthis is by way of illustration only and does not constitute any sort oflimitation since there are various alterations, changes, deviations,amendments, revisions, eliminations, additions, substitutions, omissionsand departures which may be made in the present illustration and othertypes of sliding glass doorarrangements with which the present inventioncan be used without departing from the scope of this invention asdefined only by a proper interpretation of the appended claims.

What is claimed:

1. In a security bar positioned on the fixed frame in a wall opening inwhich there is at least one first sliding door having a door frame insaid fixed frame and in which there is at least one other second eitherfixed or sliding door having a door frame in the same fixed frame:

a. an elongated, rigid, strong and adjustable security bar having adownwardly depending leg on one end thereof, said leg terminating in ashort angular projection which is fitted beneath the corner of the firstsliding door, said bar being supported on said leg above the bottom ofthe sliding door and being selectively adjustable in length to fittightly between the first sliding door and the fixed frame,

b. the other end of the bar being inserted against and abutting thefixed frame opposite from the sliding door frame in a tight fitting,

c. and at least one other projection projecting inwardly in front of aportion of said second door frame to prevent said sliding door frommovement and to prevent dislodgement of said security bar in a certaindirection of attempted movement.

2. The device claimed in claim 1 wherein there is a transverseprojection on the end of said security bar which is engaged with saidfixed frame and said projection extending transversely to said fixedframe.

3. The device in claim 1 wherein there is a second projection extendinginwardly in generally the same direction of said first projection andengaging the side of said second door frame.

4. The device in claim 1: said security bar comprising two elongatedsections rigidly and adjustably connected.

5. The device in claim 4: said sections being telescopically engaged fortelescopic adjustment in length.

6. The device in claim 2: another and second transverse projection onsaid bar extending transversely in a direction opposite from said firsttransverse projection and being used when said bar is positioned withsaid second transverse projection across a door frame.

1. In a security bar positioned on the fixed frame in a wall opening inwhich there is at least one first sliding door having a door frame insaid fixed frame and in which there is at least one other second eitherfixed or sliding door having a door frame in the same fixed frame: a. anelongated, rigid, strong and adjustable security bar having a downwardlydepending leg on one end thereof, said leg terminating in a shortangular projection which is fitted beneath the corner of the firstsliding door, said bar being supported on said leg above the bottom ofthe sliding door and being selectively adjustable in length to fittightly between the first sliding door and the fixed frame, b. the otherend of the bar being inserted against and abutting the fixed frameopposite from the sliding door frame in a tight fitting, c. and at leastone other projection projecting inwardly in front of a portion of saidsecond door frame to prevent said sliding door from movement and toprevent dislodgement of said security bar in a certain direction ofattempted movement.
 2. The device claimed in claim 1 wherein there is atransverse projection on the end of said security bar which is engagedwith said fixed frame and said projection extending transversely to saidfixed frame.
 3. The device in claim 1 wherein there is a secondprojection extending inwardly in generally the same direction of saidfirst projection and engaging the side of said second door frame.
 4. Thedevice in claim 1: said security bar comprising two elongated sectionsrigidly and adjustably connected.
 5. The device in claim 4: saidsections being telescopically engaged for telescopic adjustment inlength.
 6. The device in claim 2: another and second transverseprojection on said bar extending transversely in a direction oppositefrom said first transverse projection and being used when said bar ispositioned with said second transverse projection across a door frame.